.main {
    //min-width: 1200px;
    height: 100%;
    background:url(../image/home/home_bg.png)  center top no-repeat;
    background-size: 100% 100%;    
    .nav {
        height: 80px;
        background:url(../image/header_bg.png) left top no-repeat;
        background-size: 100% 100%;
        padding-right: 50px;
        .title_image {
            width: 429px;
            height: 78px;
        }
        >ul {
            li {
                height: 65px;
                line-height: 65px;
                margin-left: 30px;
                >a {
                    font-size: 16px;
                    color: #5BBAFF;
                    &.acitve {
                        font-weight: bold;
                        color: #5BD8FF;
                    }
                }
            }
        }
    }
    .iframe_box {
        iframe {
            width: 100%;
        }
    }
}